/* ===== IT-Layer Lernapp – Design (angelehnt an Quiz-App-Mockup) ===== */
:root{
  --bg:#eee7d8; --bg2:#e7dfcd;
  --surface:#fbf8f1; --surface2:#f3ecdd;
  --ink:#1b1a17; --muted:#8b8578; --line:#e6ddca;
  --diamond:#37c0e8; --purple:#6d54d6; --purple-ink:#efeaff;
  --black:#151412; --good:#2fae59; --bad:#e2533c; --warn:#e6a11f;
  --radius:24px; --radius-sm:16px;
  --shadow:0 10px 34px rgba(60,50,25,.12);
  --shadow-sm:0 4px 16px rgba(60,50,25,.08);
}
*{box-sizing:border-box; -webkit-tap-highlight-color:transparent;}
html,body{margin:0;padding:0;}
body{
  font-family:'Plus Jakarta Sans',-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;
  background:var(--bg); color:var(--ink); line-height:1.5;
  min-height:100vh;
}
h1,h2,h3,h4{margin:0 0 .35em; line-height:1.15; font-weight:800; letter-spacing:-.02em;}
p{margin:0 0 .6em;}
a{color:var(--purple);}
img{max-width:100%; display:block;}

/* App-Rahmen: mittige Handy-Spalte */
.app{
  max-width:480px; margin:0 auto; min-height:100vh; position:relative;
  background:var(--bg); display:flex; flex-direction:column;
}
.screen{display:none; flex:1; flex-direction:column;}
.screen.active{display:flex; animation:fade .28s ease;}
@keyframes fade{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}
.scroll{flex:1; overflow-y:auto; padding:20px 20px 110px;}
.pad{padding:22px 20px;}

.muted{color:var(--muted);}
.small{font-size:.85rem;}
.center{text-align:center;}
.row{display:flex; align-items:center; gap:12px;}
.spacer{flex:1;}

/* Buttons */
.btn{
  font:inherit; font-weight:700; cursor:pointer; border-radius:16px; border:none;
  background:var(--surface2); color:var(--ink); padding:15px 20px; font-size:1rem;
  transition:transform .1s ease, filter .15s ease, background .15s;
}
.btn:active{transform:scale(.98);}
.btn.block{width:100%;}
.btn.dark{background:var(--black); color:#fff;}
.btn.dark:hover{filter:brightness(1.15);}
.btn.purple{background:var(--purple); color:#fff;}
.btn.ghost{background:transparent; border:1.5px solid var(--line);}
.btn.sm{padding:9px 14px; font-size:.85rem; border-radius:12px;}
.btn.danger{background:#fdece9; color:#c23b23;}
.btn:disabled{opacity:.5; cursor:not-allowed;}
.btn-row{display:flex; gap:10px; flex-wrap:wrap;}

/* Chips / Pills */
.diamond{
  display:inline-flex; align-items:center; gap:6px; background:#fff; color:var(--ink);
  font-weight:800; padding:7px 13px; border-radius:999px; box-shadow:var(--shadow-sm); font-size:.95rem;
}
.diamond .gem{color:var(--diamond); font-size:1.05rem;}
.pill{display:inline-block;font-size:.72rem;font-weight:700;padding:4px 11px;border-radius:999px;background:var(--surface2);color:var(--muted);}

/* Inputs */
label{display:block;font-size:.82rem;color:var(--muted);margin:0 0 6px;font-weight:700;}
input,select,textarea{
  font:inherit;width:100%;background:var(--surface);color:var(--ink);
  border:1.5px solid var(--line);border-radius:14px;padding:14px 15px;
}
input:focus,select:focus,textarea:focus{outline:none;border-color:var(--purple);}
.field{margin:0 0 15px;}

/* Cards */
.card{background:var(--surface);border-radius:var(--radius);padding:20px;box-shadow:var(--shadow-sm);margin:0 0 16px;}

/* ===== Onboarding ===== */
#screen-onboarding .scroll{display:flex;flex-direction:column;padding-bottom:30px;}
.ob-title{font-size:4.2rem;font-weight:800;letter-spacing:-.04em;margin:0;}
.ob-sub{font-weight:700;color:var(--muted);margin-top:-4px;}
.ob-hero{
  width:100%;aspect-ratio:1/1;border-radius:var(--radius);margin:14px 0;overflow:hidden;
  background:linear-gradient(135deg,#efe6d3,#e3d7bd);display:flex;align-items:center;justify-content:center;position:relative;
}
.ob-hero .ph{position:absolute;inset:0;}
.ob-hero img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;z-index:1;}
.ph{display:flex;align-items:center;justify-content:center;font-size:3.4rem;width:100%;height:100%;
  background:linear-gradient(135deg,var(--purple),#a084f0);color:#fff;text-align:center;flex-direction:column;gap:8px;}
.ph small{font-size:.8rem;opacity:.85;font-weight:700;max-width:80%;}

/* ===== Header (Home etc.) ===== */
.hdr{display:flex;align-items:flex-start;justify-content:space-between;gap:12px;margin-bottom:18px;}
.hdr h2{font-size:1.7rem;margin:0;}
.hdr .hi{color:var(--muted);font-weight:700;font-size:.95rem;}

/* Daily challenge */
.daily{
  background:linear-gradient(135deg,var(--purple),#8b6ff0);color:#fff;border-radius:var(--radius);
  padding:20px;position:relative;overflow:hidden;box-shadow:var(--shadow);margin-bottom:22px;
}
.daily h3{color:#fff;font-size:1.25rem;margin-bottom:6px;}
.daily p{color:var(--purple-ink);font-size:.9rem;margin-bottom:14px;max-width:80%;}
.daily .bar{background:rgba(255,255,255,.3);}
.daily .bar>span{background:#fff;}
.daily .emoji{position:absolute;right:14px;top:14px;font-size:3.2rem;filter:drop-shadow(0 4px 8px rgba(0,0,0,.2));}
.bar{height:10px;background:var(--surface2);border-radius:999px;overflow:hidden;}
.bar>span{display:block;height:100%;background:linear-gradient(90deg,var(--purple),#9b83f5);width:0;border-radius:999px;transition:width .5s;}

/* Section headers */
.sec-head{display:flex;align-items:center;justify-content:space-between;margin:6px 0 12px;}
.sec-head h3{font-size:1.15rem;margin:0;}
.sec-head a{font-size:.85rem;font-weight:700;cursor:pointer;color:var(--muted);}

/* Category tiles */
.cats{display:grid;grid-template-columns:repeat(2,1fr);gap:12px;margin-bottom:24px;}
.cat{
  border-radius:var(--radius-sm);padding:16px;color:#fff;cursor:pointer;position:relative;
  min-height:112px;display:flex;flex-direction:column;justify-content:space-between;box-shadow:var(--shadow-sm);
  transition:transform .12s;
}
.cat:active{transform:scale(.97);}
.cat .ci{font-size:1.7rem;}
.cat .cn{font-weight:800;font-size:1.05rem;}
.cat .cc{font-size:.78rem;opacity:.9;font-weight:600;}

/* Featured / trending */
.feat{
  display:flex;gap:14px;align-items:center;border-radius:var(--radius);overflow:hidden;
  background:var(--surface);box-shadow:var(--shadow-sm);margin-bottom:14px;cursor:pointer;padding:14px;
}
.feat .thumb{width:78px;height:78px;border-radius:16px;flex:0 0 auto;overflow:hidden;display:flex;align-items:center;justify-content:center;font-size:2rem;color:#fff;}
.feat .fx{flex:1;min-width:0;}
.feat h4{font-size:1.05rem;margin:0 0 3px;}
.feat .fd{font-size:.8rem;color:var(--muted);margin:0 0 6px;}
.feat .fq{font-size:.75rem;color:var(--muted);font-weight:700;}
.feat .go{width:40px;height:40px;border-radius:50%;background:var(--black);color:#fff;display:flex;align-items:center;justify-content:center;flex:0 0 auto;font-size:1.1rem;}

/* ===== Quiz ===== */
#screen-quiz{background:var(--bg);}
.quiz-top{display:flex;align-items:center;gap:12px;padding:16px 20px 6px;}
.quiz-top .x{width:40px;height:40px;border-radius:50%;background:var(--surface);display:flex;align-items:center;justify-content:center;cursor:pointer;font-size:1.1rem;box-shadow:var(--shadow-sm);border:none;}
.opt{
  display:flex;align-items:center;gap:12px;width:100%;text-align:left;margin:0 0 12px;padding:16px 18px;
  border-radius:16px;border:1.5px solid var(--line);background:var(--surface);color:var(--ink);cursor:pointer;
  font:inherit;font-size:1rem;font-weight:600;transition:.12s;
}
.opt:hover:not(:disabled){border-color:var(--purple);}
.opt .mk{width:26px;height:26px;border-radius:50%;border:2px solid var(--line);flex:0 0 auto;display:flex;align-items:center;justify-content:center;font-size:.9rem;font-weight:800;color:var(--muted);}
.opt.correct{border-color:var(--good);background:#eafaf0;}
.opt.correct .mk{background:var(--good);border-color:var(--good);color:#fff;}
.opt.wrong{border-color:var(--bad);background:#fdede9;}
.opt.wrong .mk{background:var(--bad);border-color:var(--bad);color:#fff;}
.opt:disabled{cursor:default;}
.feedback{padding:15px 16px;border-radius:16px;margin:4px 0 14px;font-weight:600;font-size:.92rem;}
.feedback.ok{background:#eafaf0;border:1.5px solid var(--good);color:#1c7a3f;}
.feedback.no{background:#fdede9;border:1.5px solid var(--bad);color:#b2371f;}

/* ===== Leaderboard ===== */
.podium{display:flex;align-items:flex-end;justify-content:center;gap:10px;margin:8px 0 22px;}
.pod{display:flex;flex-direction:column;align-items:center;gap:6px;flex:1;max-width:120px;}
.pod .av{border-radius:50%;overflow:hidden;background:var(--purple);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:800;border:3px solid #fff;box-shadow:var(--shadow-sm);position:relative;}
.pod.first .av{width:92px;height:92px;font-size:2rem;border-color:var(--warn);}
.pod .av img{width:100%;height:100%;object-fit:cover;}
.pod.side .av{width:66px;height:66px;font-size:1.4rem;}
.pod .crown{font-size:1.6rem;line-height:1;margin-bottom:-4px;}
.pod .rankbadge{position:absolute;bottom:-6px;left:50%;transform:translateX(-50%);width:24px;height:24px;border-radius:50%;background:var(--warn);color:#fff;display:flex;align-items:center;justify-content:center;font-size:.75rem;font-weight:800;border:2px solid #fff;}
.pod .nm{font-weight:800;font-size:.9rem;margin-top:8px;text-align:center;}
.pod .pt{font-size:.75rem;color:var(--muted);font-weight:700;}
.lb-list{background:var(--surface);border-radius:var(--radius);padding:8px;box-shadow:var(--shadow-sm);}
.lb-row{display:flex;align-items:center;gap:12px;padding:12px 10px;border-bottom:1px solid var(--line);}
.lb-row:last-child{border-bottom:none;}
.lb-row.me{background:var(--surface2);border-radius:14px;}
.lb-row .rk{width:22px;text-align:center;font-weight:800;color:var(--muted);}
.lb-row .av{width:42px;height:42px;border-radius:50%;background:var(--purple);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:800;flex:0 0 auto;font-size:.95rem;overflow:hidden;}
.lb-row .av img{width:100%;height:100%;object-fit:cover;}
.lb-row .info{flex:1;min-width:0;}
.lb-row .info .n{font-weight:800;font-size:.95rem;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
.lb-row .info .p{font-size:.78rem;color:var(--muted);}
.lb-row .score{width:40px;height:40px;border-radius:50%;color:#fff;display:flex;align-items:center;justify-content:center;font-weight:800;font-size:.9rem;flex:0 0 auto;}

/* Avatar initials colors set inline via JS */

/* ===== Profile ===== */
.prof-top{display:flex;flex-direction:column;align-items:center;gap:6px;margin-bottom:18px;}
.prof-av{width:96px;height:96px;border-radius:50%;background:var(--purple);color:#fff;display:flex;align-items:center;justify-content:center;font-size:2.4rem;font-weight:800;box-shadow:var(--shadow);}
.stat-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px;margin-bottom:16px;}
.stat{background:var(--surface);border-radius:var(--radius-sm);padding:16px;text-align:center;box-shadow:var(--shadow-sm);}
.stat .n{font-size:1.7rem;font-weight:800;}
.stat .l{font-size:.75rem;color:var(--muted);font-weight:700;}

/* ===== Learn ===== */
.layer{display:flex;gap:14px;align-items:flex-start;cursor:pointer;padding:16px;border-radius:var(--radius-sm);background:var(--surface);box-shadow:var(--shadow-sm);margin:0 0 12px;}
.layer .num{width:42px;height:42px;flex:0 0 auto;border-radius:13px;font-weight:800;display:flex;align-items:center;justify-content:center;font-size:1.1rem;color:#fff;}
.layer h4{margin:0;font-size:1rem;}
.layer .en{color:var(--muted);font-size:.8rem;font-weight:600;}
.layer .chev{margin-left:auto;color:var(--muted);align-self:center;}
.layer-detail{margin-top:10px;display:none;}
.layer-detail.open{display:block;}
.kv{margin:8px 0;font-size:.88rem;}
.kv b{color:var(--purple);}
.tags{display:flex;flex-wrap:wrap;gap:6px;margin-top:6px;}
.tag{font-size:.75rem;padding:4px 10px;border-radius:9px;background:var(--surface2);}

/* ===== Bottom nav ===== */
.tabbar{
  position:sticky;bottom:0;left:0;right:0;margin-top:auto;
  background:rgba(251,248,241,.92);backdrop-filter:blur(12px);border-top:1px solid var(--line);
  display:flex;justify-content:space-around;padding:8px 8px calc(8px + env(safe-area-inset-bottom,0px));
}
.tabbar button{flex:1;background:none;border:none;color:var(--muted);font-size:.68rem;font-weight:700;
  display:flex;flex-direction:column;align-items:center;gap:3px;padding:7px 2px;cursor:pointer;border-radius:14px;}
.tabbar button .ic{font-size:1.3rem;line-height:1;}
.tabbar button.active{color:var(--ink);}
.app.no-nav .tabbar{display:none;}

/* Admin */
.q-admin{border:1.5px solid var(--line);border-radius:14px;padding:13px;margin:0 0 10px;background:var(--surface);}
.q-admin .q-txt{font-weight:700;margin-bottom:4px;}
.q-admin .meta{font-size:.74rem;color:var(--muted);}
.opt-edit{display:flex;gap:8px;align-items:center;margin-bottom:8px;}
.opt-edit input[type=text]{flex:1;}
.opt-edit input[type=radio]{width:auto;}
.user-row{display:flex;align-items:center;gap:10px;padding:11px;border-radius:12px;background:var(--surface);margin-bottom:8px;box-shadow:var(--shadow-sm);}
.user-row .info{flex:1;min-width:0;}
.badge{font-size:.68rem;font-weight:800;padding:2px 8px;border-radius:999px;background:var(--purple);color:#fff;}

/* Auth tabs */
.auth-tabs{display:flex;background:var(--surface2);border-radius:14px;padding:4px;margin-bottom:18px;}
.auth-tabs button{flex:1;border:none;background:none;padding:11px;border-radius:11px;font:inherit;font-weight:700;color:var(--muted);cursor:pointer;}
.auth-tabs button.active{background:#fff;color:var(--ink);box-shadow:var(--shadow-sm);}

/* Toast */
.toast{position:fixed;left:50%;bottom:96px;transform:translateX(-50%) translateY(16px);background:var(--black);color:#fff;
  padding:13px 20px;border-radius:14px;box-shadow:var(--shadow);opacity:0;transition:.25s;z-index:80;pointer-events:none;max-width:88%;text-align:center;font-weight:600;font-size:.9rem;}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0);}
.toast.err{background:var(--bad);}

/* Loading */
.loading{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;color:var(--muted);padding:60px;}
.spin{width:30px;height:30px;border:3px solid var(--line);border-top-color:var(--purple);border-radius:50%;animation:sp .8s linear infinite;}
@keyframes sp{to{transform:rotate(360deg)}}
.empty{text-align:center;color:var(--muted);padding:30px 10px;}
.divider{height:1px;background:var(--line);margin:16px 0;}
.confetti-pop{animation:pop .5s ease;}
@keyframes pop{0%{transform:scale(.6);opacity:0}60%{transform:scale(1.08)}100%{transform:scale(1);opacity:1}}